.portoadmin-lecture-page .quiz-screen-main-inner {
    max-width: 1280px;
}

.lecture-screen-main-inner {
    padding-bottom: 2.2rem;
}

.lecture-screen-hero-card {
    align-items: stretch;
}

.lecture-screen-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.72fr);
    gap: 1.25rem;
    margin-top: 1.25rem;
    align-items: start;
}

.lecture-screen-content,
.lecture-screen-aside {
    display: grid;
    gap: 1.25rem;
}

.lecture-player-card,
.lecture-article-card,
.lecture-side-panel {
    border: 1px solid rgba(78, 98, 125, 0.12);
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 24px 55px rgba(40, 56, 84, 0.08);
}

.lecture-player-card {
    overflow: hidden;
    padding: 1rem;
}

.lecture-player-frame,
.lecture-player-embed {
    position: relative;
    overflow: hidden;
    border-radius: 22px;
    background: #0f131a;
}

.lecture-player-frame {
    padding-top: 56.25%;
}

.lecture-player-frame iframe,
.lecture-player-embed iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.lecture-player-embed {
    min-height: 420px;
}

.lecture-player-embed > * {
    width: 100% !important;
    max-width: 100%;
}

.lecture-player-native {
    display: block;
    width: 100%;
    border-radius: 22px;
    background: #000;
}

.lecture-article-card {
    padding: 1.6rem;
}

.lecture-article-head {
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(78, 98, 125, 0.1);
}

.lecture-article-kicker {
    display: inline-flex;
    margin-bottom: 0.45rem;
    color: #6d42a3;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.lecture-article-head h2 {
    margin: 0;
    color: #223148;
    font-size: 1.5rem;
    font-weight: 800;
}

.lecture-article-body {
    padding-top: 1.3rem;
    color: #445167;
    font-size: 1rem;
    line-height: 1.9;
}

.lecture-article-body > :first-child {
    margin-top: 0;
}

.lecture-article-body img,
.lecture-article-body iframe,
.lecture-article-body table {
    max-width: 100%;
}

.lecture-article-body img {
    height: auto;
    border-radius: 18px;
}

.lecture-side-panel {
    padding: 1.25rem;
}

.lecture-side-panel h2 {
    margin: 0 0 1rem;
    color: #223148;
    font-size: 1.15rem;
    font-weight: 800;
}

.lecture-side-actions {
    display: grid;
    gap: 0.8rem;
}

.lecture-secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 1.2rem;
    border-radius: 16px;
    background: #eef3fb;
    color: #33415a;
    font-size: 0.96rem;
    font-weight: 700;
    text-decoration: none;
}

.lecture-secondary-btn:hover {
    color: #223148;
    text-decoration: none;
}

.lecture-resource-list,
.lecture-ebook-grid {
    display: grid;
    gap: 0.75rem;
}

.lecture-page-hero-btn {
    background: linear-gradient(135deg, #ffd970, #ffb84d);
    color: #322041;
    box-shadow: 0 20px 40px rgba(255, 207, 98, 0.22);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.95rem 1.45rem;
    border: 0;
    border-radius: 16px;
    font-size: 1rem;
    font-weight: 700;
}

.lecture-resource-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem;
    border-radius: 18px;
    background: #f7f9fd;
    color: #33415a;
    text-decoration: none;
}

.lecture-resource-link:hover {
    color: #223148;
    text-decoration: none;
}

.lecture-resource-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 16px;
    background: rgba(109, 66, 163, 0.1);
    color: #6d42a3;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.lecture-resource-copy {
    display: grid;
    gap: 0.12rem;
    min-width: 0;
}

.lecture-resource-copy strong {
    color: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.4;
    word-break: break-word;
}

.lecture-resource-copy small {
    color: #7a869c;
    font-size: 0.78rem;
    font-weight: 700;
}

.lecture-ebook-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lecture-ebook-card {
    display: grid;
    gap: 0.6rem;
    padding: 0.75rem;
    border-radius: 20px;
    background: #f7f9fd;
    color: #33415a;
    text-decoration: none;
}

.lecture-ebook-card:hover {
    color: #223148;
    text-decoration: none;
}

.lecture-ebook-cover {
    display: block;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    border-radius: 16px;
    background: #dbe3f0;
}

.lecture-ebook-cover img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lecture-ebook-card strong {
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.45;
}

.lecture-locked-card {
    margin-top: 1.25rem;
}

.lecture-locked-actions {
    display: flex;
    justify-content: center;
    margin-top: 1.4rem;
}

@media (max-width: 1199px) {
    .lecture-screen-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .lecture-player-card,
    .lecture-article-card,
    .lecture-side-panel {
        border-radius: 22px;
    }

    .lecture-article-card {
        padding: 1.2rem;
    }

    .lecture-player-embed {
        min-height: 240px;
    }

    .lecture-ebook-grid {
        grid-template-columns: 1fr 1fr;
    }
}